Title :
Submarine canyons in Brazilian Equatorial Margin: The Apodi-Mossor?? canyons, NE-Brazil
Author :
Almeida, Narelle M. ; Vital, Helenice
Author_Institution :
Postgrad. Programme in Geodynamics & Geophys. (PPGG), Fed. Univ. of Rio Grande do Norte (UFRN), Natal, Brazil
Abstract :
The lack of data of continental slope regions and the perspective to oil explorations in these areas stimulated this study. Multibeam data was collected in continental slope of the Potiguar basin with the aim of modeling the seafloor. Different submarine canyons were mapped. In this work the focus are a set of 4 canyons we believe were originated due to the influence of Apodi-Mossoró River when the sea level was lower than presently. The canyons were named a1 to a4 canyons. Landslide structures and gullies were mapped in the walls of these canyons indicating erosional deposicional style.
Keywords :
bathymetry; sea level; seafloor phenomena; Apodi-Mossoro canyons; Apodi-Mossoro river; Brazilian equatorial margin; NE-Brazil; Potiguar basin; continental slope regions; erosional deposicional style; landslide structures; multibeam data; oil explorations; sea level; seafloor modeling; submarine canyons; Market research; Morphology; Rivers; Sea level; Sediments; Terrain factors; Underwater vehicles; continental slope; multibeam; submarine canyon;
Conference_Titel :
Acoustics in Underwater Geosciences Symposium (RIO Acoustics), 2013 IEEE/OES
Conference_Location :
Rio de Janeiro
DOI :
10.1109/RIOAcoustics.2013.6683989
